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Photo: 2020-07-14 12 21 59 View north along New Jersey State Route 15 (Sparta Bypass) at the exit for Sparta-Lake Mohawk-Business District in Sparta Township, Sussex County, New Jersey by Famartin (CC BY-SA 4.0) License

Sparta Lake

Lake · Sparta, New Jersey

Comfortable for a swim today

Good to swim

Comfortable for a swim today: water temperature is 76°F, within the comfortable 70–86°F range.

  • Water temperature is 76°F, within the comfortable 70–86°F range.
  • Heavy rain today can raise bacteria levels near outfalls and river mouths.
Good to swimGreat conditions today

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Comfortable for a swim today

Good to swim

Comfortable for a swim today: water temperature is 76°F, within the comfortable 70–86°F range.

  • Water temperature is 76°F, within the comfortable 70–86°F range. NOAA buoy BATN6, as of Aug 21, 6:30 PM UTC
  • Heavy rain today can raise bacteria levels near outfalls and river mouths.
Water temp
76°F
24°C

No official beach-advisory feed for New Jersey yet — follow posted signs and local guidance.

Live data from NOAA buoy BATN6 (37.3 mi away), as of Aug 21, 6:30 PM UTC.

Weather at Sparta Lake

H: 76° L: 59°
Sunny
Sunny
76°
|
Feels like 75°
Precipitation
81%
Humidity
49%
Wind
5 mph
UV Index
5.5
Water Conditions:
🏊Perfect for swimming🧴High UV - use sunscreen
12 AM
Partly Cloudy
62°
3 AM
Overcast
61°
6 AM
Cloudy
60°
9 AM
Partly Cloudy
64°
12 PM
Sunny
70°
3 PM
Sunny
76°
6 PM
Overcast
74°
9 PM
Overcast
69°

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Frequently asked questions

Where is Sparta Lake?
Sparta Lake is a lake in Sparta, New Jersey.
What is the water temperature at Sparta Lake?
As of August 21, 2026, the water temperature at Sparta Lake in Sparta, New Jersey is 76°F (24°C), measured by NOAA buoy BATN6, 37.3 miles away.
Can you swim at Sparta Lake?
Comfortable for a swim today: water temperature is 76°F, within the comfortable 70–86°F range. Checked August 21, 2026.
How is Sparta Lake rated?
Sparta Lake in Sparta, New Jersey has an average visitor rating of 4.9 out of 5, based on 10 reviews.

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Best Times to Visit

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Perfect conditions right now!
🏞️ Lakes Tips:
  • Check for boat launch facilities and fees
  • Obtain required fishing licenses before arrival
  • Be aware of lake-specific regulations and restrictions
  • Monitor water quality reports before swimming
Best Seasons:
☀️ Summer (Jun-Aug)🍂 Fall (Sep-Nov)🌸 Spring (Mar-May)

Location & Contact

Sparta, NJ 07871

Sparta, New Jersey 07871

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